Aroma diffuser



FIG. 1 is a perspective view of an aroma diffuser showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines illustrate portions of the aroma diffuser that form nopart of the claimed design.

CLAIM The ornamental design for an aroma diffuser, as shown anddescribed.